72kv Composite Horizontal Line Post Insulator (Silicone Rubber). Superior Hydrophobicity: Silicone rubber material prevents surface contamination and maintains performance in humid or polluted environments. Outstanding Anti-Aging: Advanced polymer formulation ensures long-term stability against UV radiation and temperature fluctuations. High Mechanical Strength: Robust construction withstands mechanical loads, wind pressure, and accidental impacts better than porcelain. Excellent Tracking Resistance: Composite structure prevents carbonization paths, ensuring continuous high voltage isolation integrity. OEM Customization Available: We accept OEM customization with your logo, brand, and packaging. Comprehensive Warranty: 1-3 year warranty against manufacturing defects starting from the date of shipment. Fast Delivery Time: Normally 15-35 days after receiving advance payment, subject to order quantity. ISO Certified Quality: Manufactured under ISO9001:2015, ISO45001:2018, and ISO14001 management systems.